Rotary cylinder sail cylinder body structure and rotary cylinder sail thereof

Abstract

The utility model discloses a drum body structure of a rotary drum sail and the rotary drum sail thereof, the drum body structure is formed by splicing an upper shell and a lower shell, the longitudinal section of the upper shell and the longitudinal section of the lower shell are semicircular, and the butt joint splicing position of the upper shell and the lower shell is bonded through an adhesive; according to the utility model, the rotary cylinder sail is divided into two semicircles along the longitudinal direction, and finally the two semicircles are assembled into an integral novel cylinder structure. Compared with a three-petal form, the structure has the advantages that the production efficiency is high, the production efficiency can be improved by about 50%, and the risk is low; and compared with an integral structure, the integral manufacturing difficulty is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of composite material processing and molding, specifically relating to a rotary sail cylinder structure and its rotary sail. Background Technology

[0002] The shipping industry has spurred the development of various green and carbon-reducing technologies. Wind-powered propulsion technologies (such as airfoil sails, rotary sails, and kite sails) can provide significant energy-saving and emission-reduction effects, and can be quickly launched to the market and generate good emission reduction benefits. IMO circular MEPC.1 Circ.815 classifies innovative energy-efficient technologies into three categories: (A), (B), and (C). Categories (B) and (C) are further subdivided into (B-1), (B-2), and (C-1), (C-2). Wind-powered propulsion technology belongs to category B-2 of innovative technologies.

[0003] Compared to other energy efficiency technologies (EET), wind-powered propulsion systems offer the greatest potential for fuel cost reductions—estimated at an average of about 10% among all available technologies. Based on the difference between installed and ordered projects, rotary sails are the most installed wind-powered propulsion technology and the most diversified technology in the marine sector.

[0004] When the angular velocity vector of a rotating object does not coincide with its velocity vector, a lateral force will be generated in a direction perpendicular to the plane formed by the angular velocity vector and the translational velocity vector. The phenomenon that the object's trajectory is deflected under the action of this lateral force is called the "Magnus effect".

[0005] A rotor sail is a large cylindrical rotor sail mounted on a ship that utilizes the "Magnus effect." On specific routes with persistent crosswinds, the rotor sail provides additional thrust along the ship's direction of travel as it rotates, allowing the main engine to maintain its target speed while reducing its rotational speed. This helps reduce energy consumption and achieve energy conservation and emission reduction, and is commonly known as a "rotor sail" or "rotor."

[0006] Rotary sails mainly consist of a control system, an internal steel structure, and an external rotary section. Currently, rotary sails are primarily made of composite materials, with the main manufacturing processes being winding and casting. Among these, the casting process currently mainly uses a three-part molded form and an integral molding structure.

[0007] Theoretically, this three-part mold-fitting method has a significant impact on production efficiency and product quality. First, the three-part mold-fitting method requires three production cycles to form a closed loop in the circumferential direction; second, the three-part mold-fitting method means there are three seams, which increases the quality risk at the seam locations. The other option, an integral molding structure, has not yet been put into use due to its high production difficulty. Summary of the Invention

[0008] Based on the shortcomings of existing rotary sail structures, this utility model proposes a rotary sail body structure that improves the production efficiency of the rotary sail body and reduces the manufacturing difficulty. Compared with the three-lobed form, the advantages of this structure are high production efficiency (which can be increased by nearly 50%) and low risk; compared with the integral structure, it reduces the overall manufacturing difficulty.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A rotary sail cylindrical structure is provided, which is composed of an upper shell and a lower shell with a semi-circular longitudinal cross section. The upper shell and the lower shell are joined together by adhesive.

[0011] Furthermore, the joint between the upper shell and the lower shell is a mold seam, and a reinforcing layer is provided at the inner and outer mold seams.

[0012] Furthermore, the reinforcing layer is specifically a composite material composed of glass fiber and epoxy resin.

[0013] Furthermore, the cylindrical structure is formed by splicing together several sections of cylindrical body of different lengths.

[0014] A rotary sail, comprising a control system, a hydraulic system, an internal steel structure, and the aforementioned cylindrical structure.

[0015] Furthermore, flanges are installed at both ends of the cylindrical structure, and several reinforcing ribs and conical discs are installed inside the cylindrical structure.

[0016] The above technical solution can achieve the following beneficial effects:

[0017] This invention divides the spiral sail into two semicircles along the longitudinal direction, and finally molds them together to form a new cylindrical structure. Compared with the three-part form, this structure has the advantages of high production efficiency, which can be increased by nearly 50%, and low risk; compared with the integral structure, it reduces the overall manufacturing difficulty.

[0018] It is divided into two semicircles in the circumferential direction, and in the length direction it can be a whole or it can be made up of sections of different lengths spliced ​​together. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the upper and lower shells.

[0020] Figure 2 This is a diagram showing the mold closing state.

[0021] Figure 3 This is an overall state diagram.

[0022] Figure 4 This is a diagram of the internal structure of the rotary sail cylinder.

[0023] In the picture:

[0024] In the diagram: 1. Upper shell; 2. Lower shell; 3. External reinforcement of the mold joint; 4. Internal reinforcement of the mold joint; 5. Adhesive; 6. Flange; 7. Reinforcing rib; 8. Conical disc. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] Example 1: As Figure 1 As shown, a rotary sail cylinder structure is composed of an upper shell 1 and a lower shell 2 with a semi-circular longitudinal cross-section. Figure 1 and Figure 2 As shown in the figure, the upper shell and the lower shell are bonded together by adhesive 5. The joint between the upper shell and the lower shell is a mold seam, and reinforcement layers are provided on the inner and outer sides of the mold seam, namely the inner reinforcement 4 and the outer reinforcement 3 of the mold seam, respectively.

[0027] Furthermore, the cylindrical structure is formed by splicing together several sections of cylindrical body of different lengths.

[0028] The specific production method is as follows:

[0029] Step a: Produce the upper and lower shells of the rotary sail separately on the mold;

[0030] Step b: After the upper and lower shells have completely cured and reached the required TG, fix the internal components (if present, such as support rings, conical discs, flanges, etc.) in the required positions and angles, and apply adhesive to the treated mold bonding surfaces.

[0031] Step c: After the adhesive is applied, the upper shell is quickly flipped onto the lower shell using a hydraulic flipping system to complete the mold closing.

[0032] Step d: After the adhesive has fully cured and reached the required TG, demold the whole thing and smooth out the mold seams.

[0033] Step e: Based on the required number of layers and materials, reinforce the joints from both the inside and outside to further form a unified structure. Figure 3 (As shown).

[0034] As can be seen from the above production method, the structure of this utility model is much simpler to produce, increases production efficiency by nearly 50%, and has low production operation risk.

[0035] Example 2: The rotary sail of this utility model can be obtained by combining the cylindrical structure, hydraulic system, control system and internal steel structure of the rotary sail made in Example 1.

[0036] Figure 4 As shown, flanges 6 are installed at both ends of the rotary sail cylinder structure. These two flanges are bonded to the inside of the cylinder. The lower flange is connected to an external metal component, serving as a guide and bearing most of the radial force. The upper flange is connected and fixed to a large top disc, which is an independent circular body that provides balance during rotation. In this embodiment, four reinforcing ribs 7 are installed inside the rotary sail cylinder structure, bonded to the inside of the cylinder, to support the internal structure, prevent cylinder instability, and enhance the cylinder's rigidity. Two conical discs 8 are also installed inside the cylinder, used for connecting the transmission bearings, driving the cylinder's rotation, and bearing the cylinder's weight and a portion of the radial force.

[0037] The above descriptions are all preferred embodiments of this utility model. For those skilled in the art, any modifications to this utility model in various equivalent forms without departing from the principle of this utility model shall fall within the protection scope of the appended claims.

Claims

1. A spin-tube windkite tube structure, characterized by: The cylinder structure is composed of an upper shell and a lower shell with a semicircular longitudinal section, and the upper shell and the lower shell are bonded by an adhesive at the joint.

2. A structure of a rotating cylinder wind sail cylinder according to claim 1, characterized in that: The joint of the upper shell and the lower shell is a mold joint, and a reinforcing layer is arranged at the mold joint on the inner side and the outer side.

3. A structure of a rotating cylinder wind sail cylinder according to claim 2, characterized in that: The reinforcing layer is a composite material composed of glass fiber and epoxy resin glue.

4. A structure of a rotating cylinder wind sail cylinder according to claim 1, characterized in that: The cylinder structure is formed by splicing several cylinder segments with different lengths.

5. A spin-tube sail, characterized by: The rotating cylinder wind sail is composed of a control system, a hydraulic system, an internal steel structure, and the cylinder structure of claim 1.

6. A spin cylinder wind sail according to claim 5, wherein: Flanges are installed at both ends of the cylinder structure, and a plurality of reinforcing ribs and conical discs are installed in the cylinder structure.

Images